I'm the first one to admit that TurboTax is an incredibly useful product. But can I point out that Intuit, the makers of the software, spend millions of dollars a year lobbying Capitol Hill to stall legislation that would streamline the tax filing process, enable the IRS to send people pre-populated forms, and even create a return-free filing system? Accountants, while just as dependent on the opacity of the system for their business, don't then as effectively lobby Congress. But Intuit's software helped 33 million people file their returns last year. H&R Block? 20 more million. Those two companies try their damndest to preserve the mess.
TaxAct! It's similar to TurboTax, they try to upsell you on everything but it's easy enough to avoid that, and I don't think they lobby to prevent changes to tax codes.
I've heard of it, though have never tried it myself. Arguably any free version of tax preparation software, including TurboTax's free versions, would be better than giving Intuit money. Although there's the whole "if you're not paying for anything when using a service, then you are the product" so TaxAct is probably better than TurboTax in that regard.